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1. (WO2018179398) SEWING MACHINE

Pub. No.:    WO/2018/179398    International Application No.:    PCT/JP2017/013764
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Apr 01 01:59:59 CEST 2017
IPC: D05B 69/20
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KAI, Takashi
甲斐 孝志
UENO, Toichi
上野 東一
YOSHIDA, Shunsuke
吉田 俊介
SHIMIZU, Kei
清水 慧
Title: SEWING MACHINE
Abstract:
This sewing machine is characterized by being provided with: a hook having a hook point which catches a loop of a needle thread formed by movement of a sewing needle inserted through a to-be-sewn article, from a bottom dead center to a top dead center; a rotation information detector (302) which detects rotation information about a motor which rotates the hook; and a monitoring unit (503) which monitors generation of stitch skipping on the basis of the rotation information detected during a time period in which the hook point of the hook catches the needle thread, and outputs a stitch skipping detection signal when the stitch skipping is detected. The present invention exerts an advantageous effect of being able to detect generation of stitch skipping with a simple configuration requiring few additional components.